John Rogers and colleagues at the University of Illinois at Urbana-Champaign have invented a new wearable patch that can measure blood flow. It works by subtly heating the skin and monitoring the heat as it moves through the blood stream. Compared to other similar technologies, the new wearable patch is simpler in design and would be cheaper to produce.
According to an article on MIT Technology Review:
The inventors of the new “epidermal electronic” sensor system say it is ready for use in a clinical setting, specifically for monitoring skin health, for example in patients who have recently had skin grafts. They say down the road it may also be possible to use it inside the body. In a recent demonstration, the researchers showed that the device can record accurate data from human subjects about the flow of blood in larger vessels, specifically veins in the forearm, as well as in the network of tiny vessels near the surface of the skin.
L’Oreal helped fund the research and is producing the wearable device as well as analytical software for it.
Read more about it on MIT Technology Review.